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<div class="title">crypto.c</div>  </div>
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<a href="crypto_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* dtls -- a very basic DTLS implementation</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 2011--2012 Olaf Bergmann &lt;bergmann@tzi.org&gt;</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2013 Hauke Mehrtens &lt;hauke@hauke-m.de&gt;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * obtaining a copy of this software and associated documentation</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * files (the &quot;Software&quot;), to deal in the Software without</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * restriction, including without limitation the rights to use, copy,</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * modify, merge, publish, distribute, sublicense, and/or sell copies</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * of the Software, and to permit persons to whom the Software is</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * furnished to do so, subject to the following conditions:</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * included in all copies or substantial portions of the Software.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND,</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"> * SOFTWARE.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="tinydtls_8h.html">tinydtls.h</a>&quot;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="dtls__config_8h.html">dtls_config.h</a>&quot;</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#ifdef HAVE_ASSERT_H</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;assert.h&gt;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define assert(x)</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="global_8h.html">global.h</a>&quot;</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="debug_8h.html">debug.h</a>&quot;</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="numeric_8h.html">numeric.h</a>&quot;</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="dtls_8h.html">dtls.h</a>&quot;</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="crypto_8h.html">crypto.h</a>&quot;</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ccm_8h.html">ccm.h</a>&quot;</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#include &quot;ecc/ecc.h&quot;</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="prng_8h.html">prng.h</a>&quot;</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="netq_8h.html">netq.h</a>&quot;</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="preprocessor">#ifndef WITH_CONTIKI</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;pthread.h&gt;</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">   52</a></span>&#160;<span class="preprocessor">#define HMAC_UPDATE_SEED(Context,Seed,Length)       \</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">  if (Seed) dtls_hmac_update(Context, (Seed), (Length))</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="crypto_8c.html#a9fd792e4bb85e55082e4bf32de0d4bdb">   55</a></span>&#160;<span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structdtls__cipher__context__t.html">dtls_cipher_context_t</a> <a class="code" href="crypto_8c.html#a9fd792e4bb85e55082e4bf32de0d4bdb">cipher_context</a>;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor">#ifndef WITH_CONTIKI</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="crypto_8c.html#ad4a90eac1ed6a277c837d7f9dc0a923c">   57</a></span>&#160;<span class="preprocessor"></span><span class="keyword">static</span> pthread_mutex_t <a class="code" href="crypto_8c.html#ad4a90eac1ed6a277c837d7f9dc0a923c">cipher_context_mutex</a> = PTHREAD_MUTEX_INITIALIZER;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="crypto_8c.html#a5e6fa88c169e5d7289052600fc445c29">   60</a></span>&#160;<span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structdtls__cipher__context__t.html">dtls_cipher_context_t</a> *<a class="code" href="crypto_8c.html#a5e6fa88c169e5d7289052600fc445c29">dtls_cipher_context_get</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;{</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#ifndef WITH_CONTIKI</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor"></span>  pthread_mutex_lock(&amp;<a class="code" href="crypto_8c.html#ad4a90eac1ed6a277c837d7f9dc0a923c">cipher_context_mutex</a>);</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor"></span>  <span class="keywordflow">return</span> &amp;<a class="code" href="crypto_8c.html#a9fd792e4bb85e55082e4bf32de0d4bdb">cipher_context</a>;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;}</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="crypto_8c.html#af65bc79ab89b4e162a0d30938d13109e">   68</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#af65bc79ab89b4e162a0d30938d13109e">dtls_cipher_context_release</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;{</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="preprocessor">#ifndef WITH_CONTIKI</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="preprocessor"></span>  pthread_mutex_unlock(&amp;<a class="code" href="crypto_8c.html#ad4a90eac1ed6a277c837d7f9dc0a923c">cipher_context_mutex</a>);</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="preprocessor"></span>}</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="preprocessor">#ifndef WITH_CONTIKI</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="crypto_8h.html#a86e6ce9d4b4afcef355836955697f52c">   76</a></span>&#160;<span class="preprocessor"></span><span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#a86e6ce9d4b4afcef355836955697f52c">crypto_init</a>()</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;{</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;}</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="crypto_8c.html#aa1b91000e339073fd2a9344957c22cbe">   80</a></span>&#160;<span class="keyword">static</span> <a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a> *<a class="code" href="crypto_8c.html#aa1b91000e339073fd2a9344957c22cbe">dtls_handshake_malloc</a>() {</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  <span class="keywordflow">return</span> malloc(<span class="keyword">sizeof</span>(<a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a>));</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;}</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="crypto_8c.html#a120f7f398e1a71a5f16e5447842bcfb3">   84</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#a120f7f398e1a71a5f16e5447842bcfb3">dtls_handshake_dealloc</a>(<a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a> *handshake) {</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;  free(handshake);</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;}</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="crypto_8c.html#aa58fc0b3953c6048834855a364432d8c">   88</a></span>&#160;<span class="keyword">static</span> <a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a> *<a class="code" href="crypto_8c.html#aa58fc0b3953c6048834855a364432d8c">dtls_security_malloc</a>() {</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;  <span class="keywordflow">return</span> malloc(<span class="keyword">sizeof</span>(<a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a>));</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;}</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="crypto_8c.html#a444e2410b15ce27c6201204476d20497">   92</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#a444e2410b15ce27c6201204476d20497">dtls_security_dealloc</a>(<a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a> *security) {</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  free(security);</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;}</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="preprocessor">#else </span><span class="comment">/* WITH_CONTIKI */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="preprocessor">#include &quot;memb.h&quot;</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;MEMB(handshake_storage, <a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a>, DTLS_HANDSHAKE_MAX);</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;MEMB(security_storage, <a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a>, DTLS_SECURITY_MAX);</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#a86e6ce9d4b4afcef355836955697f52c">crypto_init</a>() {</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;  memb_init(&amp;handshake_storage);</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;  memb_init(&amp;security_storage);</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;}</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="keyword">static</span> <a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a> *<a class="code" href="crypto_8c.html#aa1b91000e339073fd2a9344957c22cbe">dtls_handshake_malloc</a>() {</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  <span class="keywordflow">return</span> memb_alloc(&amp;handshake_storage);</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;}</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#a120f7f398e1a71a5f16e5447842bcfb3">dtls_handshake_dealloc</a>(<a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a> *handshake) {</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  memb_free(&amp;handshake_storage, handshake);</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;}</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="keyword">static</span> <a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a> *<a class="code" href="crypto_8c.html#aa58fc0b3953c6048834855a364432d8c">dtls_security_malloc</a>() {</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;  <span class="keywordflow">return</span> memb_alloc(&amp;security_storage);</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;}</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#a444e2410b15ce27c6201204476d20497">dtls_security_dealloc</a>(<a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a> *security) {</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;  memb_free(&amp;security_storage, security);</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;}</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* WITH_CONTIKI */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="crypto_8h.html#a25930cdb27a6ffcf05e2c2a9c95a6af8">  123</a></span>&#160;<a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a> *<a class="code" href="crypto_8c.html#a25930cdb27a6ffcf05e2c2a9c95a6af8">dtls_handshake_new</a>()</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;{</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;  <a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a> *handshake;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;  handshake = <a class="code" href="crypto_8c.html#aa1b91000e339073fd2a9344957c22cbe">dtls_handshake_malloc</a>();</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;  <span class="keywordflow">if</span> (!handshake) {</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <a class="code" href="debug_8h.html#ad4c9c94c054579b73789fead587c8514">dtls_crit</a>(<span class="stringliteral">&quot;can not allocate a handshake struct\n&quot;</span>);</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;  }</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;  memset(handshake, 0, <span class="keyword">sizeof</span>(*handshake));</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;  <span class="keywordflow">if</span> (handshake) {</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <span class="comment">/* initialize the handshake hash wrt. the hard-coded DTLS version */</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <a class="code" href="debug_8h.html#a0f158325426415d9efb5a36bebf45844">dtls_debug</a>(<span class="stringliteral">&quot;DTLSv12: initialize HASH_SHA256\n&quot;</span>);</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="comment">/* TLS 1.2:  PRF(secret, label, seed) = P_&lt;hash&gt;(secret, label + seed) */</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="comment">/* FIXME: we use the default SHA256 here, might need to support other </span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="comment">              hash functions as well */</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    <a class="code" href="hmac_8h.html#afe0af64930ac5d6a51289df6d1eb4f52">dtls_hash_init</a>(&amp;handshake-&gt;<a class="code" href="structdtls__handshake__parameters__t.html#a56e7392a649731166fc82a523b0eb027">hs_state</a>.<a class="code" href="structdtls__hs__state__t.html#a991b95919538531d730f74045e4fe3b1">hs_hash</a>);</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  }</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;  <span class="keywordflow">return</span> handshake;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;}</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div>
<div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="crypto_8h.html#aa17bcdc666796e52788f82ee003bb172">  146</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#aa17bcdc666796e52788f82ee003bb172">dtls_handshake_free</a>(<a class="code" href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a> *handshake)</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;{</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;  <span class="keywordflow">if</span> (!handshake)</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;  <a class="code" href="group__netq.html#gac72fd2ec9f1e6908c8a10705fb6555e2">netq_delete_all</a>(handshake-&gt;reorder_queue);</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  <a class="code" href="crypto_8c.html#a120f7f398e1a71a5f16e5447842bcfb3">dtls_handshake_dealloc</a>(handshake);</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;}</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;</div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="crypto_8h.html#a1d568085636a04b4706b7e50df802a7b">  155</a></span>&#160;<a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a> *<a class="code" href="crypto_8c.html#a1d568085636a04b4706b7e50df802a7b">dtls_security_new</a>()</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;{</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  <a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a> *security;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  security = <a class="code" href="crypto_8c.html#aa58fc0b3953c6048834855a364432d8c">dtls_security_malloc</a>();</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;  <span class="keywordflow">if</span> (!security) {</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <a class="code" href="debug_8h.html#ad4c9c94c054579b73789fead587c8514">dtls_crit</a>(<span class="stringliteral">&quot;can not allocate a security struct\n&quot;</span>);</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;  }</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;  memset(security, 0, <span class="keyword">sizeof</span>(*security));</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;  <span class="keywordflow">if</span> (security) {</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    security-&gt;<a class="code" href="structdtls__security__parameters__t.html#a21d9fac709d739535b0cbecce4c18830">cipher</a> = <a class="code" href="global_8h.html#ada7e71454d685b693df45b2c1ea0c59bacf33de998fd00f096eebbb0742d80abd">TLS_NULL_WITH_NULL_NULL</a>;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    security-&gt;<a class="code" href="structdtls__security__parameters__t.html#a6a72df7ab1151f81e49d464175fcaf2a">compression</a> = <a class="code" href="global_8h.html#a1ff555e0b1443c4cb4d17ac2161d89b2ac5b79ee16e8c0e46873fa63fdb1ab9ca">TLS_COMPRESSION_NULL</a>;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;  }</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;  <span class="keywordflow">return</span> security;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;}</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div>
<div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="crypto_8h.html#ad54069f2880b3c07185ebba736d02d17">  174</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#ad54069f2880b3c07185ebba736d02d17">dtls_security_free</a>(<a class="code" href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a> *security)</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;{</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;  <span class="keywordflow">if</span> (!security)</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;  <a class="code" href="crypto_8c.html#a444e2410b15ce27c6201204476d20497">dtls_security_dealloc</a>(security);</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;}</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"><a class="line" href="crypto_8h.html#aea7bd0a10cf289c033216a97c0ee701e">  183</a></span>&#160;<a class="code" href="crypto_8c.html#aea7bd0a10cf289c033216a97c0ee701e">dtls_p_hash</a>(<a class="code" href="group__HMAC.html#ga698cfa036e69361a93dcdd9b19579b23">dtls_hashfunc_t</a> h,</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *key, <span class="keywordtype">size_t</span> keylen,</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *label, <span class="keywordtype">size_t</span> labellen,</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *random1, <span class="keywordtype">size_t</span> random1len,</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *random2, <span class="keywordtype">size_t</span> random2len,</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> buflen) {</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;  <a class="code" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a> *hmac_a, *hmac_p;</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> A[<a class="code" href="group__HMAC.html#ga060019cf2dab9903d58118fe1abe7018">DTLS_HMAC_DIGEST_SIZE</a>];</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> tmp[<a class="code" href="group__HMAC.html#ga060019cf2dab9903d58118fe1abe7018">DTLS_HMAC_DIGEST_SIZE</a>];</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;  <span class="keywordtype">size_t</span> dlen;          <span class="comment">/* digest length */</span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;  <span class="keywordtype">size_t</span> len = 0;           <span class="comment">/* result length */</span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;  hmac_a = <a class="code" href="group__HMAC.html#gac3e9ef037800963783e618eafd046702">dtls_hmac_new</a>(key, keylen);</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;  <span class="keywordflow">if</span> (!hmac_a)</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;  <span class="comment">/* calculate A(1) from A(0) == seed */</span></div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;  <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_a, label, labellen);</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;  <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_a, random1, random1len);</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;  <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_a, random2, random2len);</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;  dlen = <a class="code" href="group__HMAC.html#gab98c992f3f9cc3c2d75077ddd46049bf">dtls_hmac_finalize</a>(hmac_a, A);</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;  hmac_p = <a class="code" href="group__HMAC.html#gac3e9ef037800963783e618eafd046702">dtls_hmac_new</a>(key, keylen);</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;  <span class="keywordflow">if</span> (!hmac_p)</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="keywordflow">goto</span> error;</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;  <span class="keywordflow">while</span> (len + dlen &lt; buflen) {</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="comment">/* FIXME: rewrite loop to avoid superflous call to dtls_hmac_init() */</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <a class="code" href="group__HMAC.html#gaa1eb35fcb2c2eb69eebaefa8eb4a790d">dtls_hmac_init</a>(hmac_p, key, keylen);</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <a class="code" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a>(hmac_p, A, dlen);</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_p, label, labellen);</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_p, random1, random1len);</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_p, random2, random2len);</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    len += <a class="code" href="group__HMAC.html#gab98c992f3f9cc3c2d75077ddd46049bf">dtls_hmac_finalize</a>(hmac_p, tmp);</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    memcpy(buf, tmp, dlen);</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    buf += dlen;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    <span class="comment">/* calculate A(i+1) */</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    <a class="code" href="group__HMAC.html#gaa1eb35fcb2c2eb69eebaefa8eb4a790d">dtls_hmac_init</a>(hmac_a, key, keylen);</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    <a class="code" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a>(hmac_a, A, dlen);</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    <a class="code" href="group__HMAC.html#gab98c992f3f9cc3c2d75077ddd46049bf">dtls_hmac_finalize</a>(hmac_a, A);</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;  }</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;  <a class="code" href="group__HMAC.html#gaa1eb35fcb2c2eb69eebaefa8eb4a790d">dtls_hmac_init</a>(hmac_p, key, keylen);</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;  <a class="code" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a>(hmac_p, A, dlen);</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;  </div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;  <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_p, label, labellen);</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_p, random1, random1len);</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;  <a class="code" href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a>(hmac_p, random2, random2len);</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  </div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;  <a class="code" href="group__HMAC.html#gab98c992f3f9cc3c2d75077ddd46049bf">dtls_hmac_finalize</a>(hmac_p, tmp);</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;  memcpy(buf, tmp, buflen - len);</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160; error:</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;  <a class="code" href="group__HMAC.html#ga5b1a3c1dcb5461bda44dd70f7bd33181">dtls_hmac_free</a>(hmac_a);</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;  <a class="code" href="group__HMAC.html#ga5b1a3c1dcb5461bda44dd70f7bd33181">dtls_hmac_free</a>(hmac_p);</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;  <span class="keywordflow">return</span> buflen;</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;}</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="keywordtype">size_t</span> </div>
<div class="line"><a name="l00249"></a><span class="lineno"><a class="line" href="crypto_8h.html#a5e47576e502b5a6255f1b489a4915512">  249</a></span>&#160;<a class="code" href="crypto_8c.html#a5e47576e502b5a6255f1b489a4915512">dtls_prf</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *key, <span class="keywordtype">size_t</span> keylen,</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;     <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *label, <span class="keywordtype">size_t</span> labellen,</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;     <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *random1, <span class="keywordtype">size_t</span> random1len,</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;     <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *random2, <span class="keywordtype">size_t</span> random2len,</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> buflen) {</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;  <span class="comment">/* Clear the result buffer */</span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;  memset(buf, 0, buflen);</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="crypto_8c.html#aea7bd0a10cf289c033216a97c0ee701e">dtls_p_hash</a>(<a class="code" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a3690b7a5bf11282bcdaa199c11408dd3">HASH_SHA256</a>, </div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;             key, keylen, </div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;             label, labellen, </div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;             random1, random1len,</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;             random2, random2len,</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;             buf, buflen);</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;}</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"><a class="line" href="crypto_8h.html#a1423f8111df1533241178461c10b50e3">  266</a></span>&#160;<a class="code" href="crypto_8c.html#a1423f8111df1533241178461c10b50e3">dtls_mac</a>(<a class="code" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a> *hmac_ctx, </div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;     <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *record,</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;     <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *packet, <span class="keywordtype">size_t</span> length,</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf) {</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;  <a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a> L;</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;  <a class="code" href="numeric_8h.html#a074d352855e1ffde4c2ddb6a6fea01b9">dtls_int_to_uint16</a>(L, length);</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;  assert(hmac_ctx);</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;  <a class="code" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a>(hmac_ctx, record +3, <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>) + <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a0749f1df578b26eccab986b0d8abaa56">uint48</a>));</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;  <a class="code" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a>(hmac_ctx, record, <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#adde6aaee8457bee49c2a92621fe22b79">uint8</a>) + <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>));</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;  <a class="code" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a>(hmac_ctx, L, <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>));</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;  <a class="code" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a>(hmac_ctx, packet, length);</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;  </div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;  <a class="code" href="group__HMAC.html#gab98c992f3f9cc3c2d75077ddd46049bf">dtls_hmac_finalize</a>(hmac_ctx, buf);</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;}</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;<span class="keyword">static</span> <span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"><a class="line" href="crypto_8c.html#a8b75c06a8e364132816aaddb81db0f2c">  283</a></span>&#160;<a class="code" href="crypto_8c.html#a8b75c06a8e364132816aaddb81db0f2c">dtls_ccm_encrypt</a>(<a class="code" href="structaes128__ccm__t.html">aes128_ccm_t</a> *ccm_ctx, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *src, <span class="keywordtype">size_t</span> srclen,</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf, </div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *nounce,</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;         <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *aad, <span class="keywordtype">size_t</span> la) {</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;  <span class="keywordtype">long</span> <span class="keywordtype">int</span> len;</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;  assert(ccm_ctx);</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;  len = <a class="code" href="ccm_8c.html#a40f4f23b5687e18dc1bce1c19101da42">dtls_ccm_encrypt_message</a>(&amp;ccm_ctx-&gt;<a class="code" href="structaes128__ccm__t.html#a5bdf410f025e4177ced456059bc8a371">ctx</a>, 8 <span class="comment">/* M */</span>, </div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;                 <a class="code" href="numeric_8h.html#a24e753bacac6be5f30e18f8a2bdefda4">max</a>(2, 15 - <a class="code" href="ccm_8h.html#a2d0e7515c26737872fe840958ed140ac">DTLS_CCM_NONCE_SIZE</a>),</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;                 nounce,</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;                 buf, srclen, </div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;                 aad, la);</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;  <span class="keywordflow">return</span> len;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;}</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;<span class="keyword">static</span> <span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"><a class="line" href="crypto_8c.html#a64f692530b9bb934f8852ca27c9ca2a1">  300</a></span>&#160;<a class="code" href="crypto_8c.html#a64f692530b9bb934f8852ca27c9ca2a1">dtls_ccm_decrypt</a>(<a class="code" href="structaes128__ccm__t.html">aes128_ccm_t</a> *ccm_ctx, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *src,</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;         <span class="keywordtype">size_t</span> srclen, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf,</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *nounce,</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;         <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *aad, <span class="keywordtype">size_t</span> la) {</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;  <span class="keywordtype">long</span> <span class="keywordtype">int</span> len;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;  assert(ccm_ctx);</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;  len = <a class="code" href="ccm_8c.html#aa3e92bdeca1d0730d48b8a85181d5b6d">dtls_ccm_decrypt_message</a>(&amp;ccm_ctx-&gt;<a class="code" href="structaes128__ccm__t.html#a5bdf410f025e4177ced456059bc8a371">ctx</a>, 8 <span class="comment">/* M */</span>, </div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;                 <a class="code" href="numeric_8h.html#a24e753bacac6be5f30e18f8a2bdefda4">max</a>(2, 15 - <a class="code" href="ccm_8h.html#a2d0e7515c26737872fe840958ed140ac">DTLS_CCM_NONCE_SIZE</a>),</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;                 nounce,</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;                 buf, srclen, </div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;                 aad, la);</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;  <span class="keywordflow">return</span> len;</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;}</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;<span class="preprocessor">#ifdef DTLS_PSK</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="preprocessor"></span><span class="keywordtype">int</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"><a class="line" href="crypto_8h.html#aa53dfed4868e257d2485024b5c170bae">  318</a></span>&#160;<a class="code" href="crypto_8c.html#aa53dfed4868e257d2485024b5c170bae">dtls_psk_pre_master_secret</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *key, <span class="keywordtype">size_t</span> keylen,</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;               <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result, <span class="keywordtype">size_t</span> result_len) {</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p = result;</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;  <span class="keywordflow">if</span> (result_len &lt; (2 * (<span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>) + keylen))) {</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;  }</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;  <a class="code" href="numeric_8h.html#a074d352855e1ffde4c2ddb6a6fea01b9">dtls_int_to_uint16</a>(p, keylen);</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;  p += <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>);</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;  memset(p, 0, keylen);</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;  p += keylen;</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;  memcpy(p, result, <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>));</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;  p += <span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>);</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;  </div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;  memcpy(p, key, keylen);</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;  <span class="keywordflow">return</span> 2 * (<span class="keyword">sizeof</span>(<a class="code" href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a>) + keylen);</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;}</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* DTLS_PSK */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;<span class="preprocessor">#ifdef DTLS_ECC</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"><a class="line" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">  342</a></span>&#160;<span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *key, <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;                  uint32_t *result) {</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;  <span class="keywordflow">for</span> (i = (key_size / <span class="keyword">sizeof</span>(uint32_t)) - 1; i &gt;= 0 ; i--) {</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;    *result = <a class="code" href="numeric_8h.html#a91f840f763f90c6d88a267011edf86d0">dtls_uint32_to_int</a>(&amp;key[i * <span class="keyword">sizeof</span>(uint32_t)]);</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    result++;</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;  }</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;}</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;</div>
<div class="line"><a name="l00352"></a><span class="lineno"><a class="line" href="crypto_8c.html#a8cefde2bc97452f889600c6b17ff04a6">  352</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="crypto_8c.html#a8cefde2bc97452f889600c6b17ff04a6">dtls_ec_key_from_uint32</a>(<span class="keyword">const</span> uint32_t *key, <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;                    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result) {</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;  <span class="keywordflow">for</span> (i = (key_size / <span class="keyword">sizeof</span>(uint32_t)) - 1; i &gt;= 0 ; i--) {</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;    <a class="code" href="numeric_8h.html#a6914ee523b27539f4e441bede8c072b4">dtls_int_to_uint32</a>(result, key[i]);</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;    result += 4;</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;  }</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;}</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;</div>
<div class="line"><a name="l00362"></a><span class="lineno"><a class="line" href="crypto_8h.html#a5ae24f3621f545752732e318840d7e2b">  362</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="crypto_8c.html#a5ae24f3621f545752732e318840d7e2b">dtls_ec_key_from_uint32_asn1</a>(<span class="keyword">const</span> uint32_t *key, <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;                 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf) {</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf_orig = buf;</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;  <span class="keywordtype">int</span> first = 1; </div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;  <span class="keywordflow">for</span> (i = (key_size / <span class="keyword">sizeof</span>(uint32_t)) - 1; i &gt;= 0 ; i--) {</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;    <span class="keywordflow">if</span> (key[i] == 0)</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;      <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;    <span class="comment">/* the first bit has to be set to zero, to indicate a poritive integer */</span></div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;    <span class="keywordflow">if</span> (first &amp;&amp; key[i] &amp; 0x80000000) {</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;      *buf = 0;</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;      buf++;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;      <a class="code" href="numeric_8h.html#a6914ee523b27539f4e441bede8c072b4">dtls_int_to_uint32</a>(buf, key[i]);</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;      buf += 4;      </div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (first &amp;&amp; !(key[i] &amp; 0xFF800000)) {</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;      buf[0] = (key[i] &gt;&gt; 16) &amp; 0xff;</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;      buf[1] = (key[i] &gt;&gt; 8) &amp; 0xff;</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;      buf[2] = key[i] &amp; 0xff;</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;      buf += 3;</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (first &amp;&amp; !(key[i] &amp; 0xFFFF8000)) {</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;      buf[0] = (key[i] &gt;&gt; 8) &amp; 0xff;</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;      buf[1] = key[i] &amp; 0xff;</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;      buf += 2;</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (first &amp;&amp; !(key[i] &amp; 0xFFFFFF80)) {</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;      buf[0] = key[i] &amp; 0xff;</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;      buf += 1;</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;      <a class="code" href="numeric_8h.html#a6914ee523b27539f4e441bede8c072b4">dtls_int_to_uint32</a>(buf, key[i]);</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;      buf += 4;</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;    }</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    first = 0;</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;  }</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;  <span class="keywordflow">return</span> buf - buf_orig;</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;}</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;</div>
<div class="line"><a name="l00398"></a><span class="lineno"><a class="line" href="crypto_8h.html#a5f9937088ea2e1d19e7d472fecae9aaa">  398</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="crypto_8c.html#a5f9937088ea2e1d19e7d472fecae9aaa">dtls_ecdh_pre_master_secret</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *priv_key,</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;                   <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_x,</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;                                   <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_y,</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;                                   <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;                                   <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result,</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;                                   <span class="keywordtype">size_t</span> result_len) {</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;  uint32_t priv[8];</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;  uint32_t pub_x[8];</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;  uint32_t pub_y[8];</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;  uint32_t result_x[8];</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;  uint32_t result_y[8];</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;  <span class="keywordflow">if</span> (result_len &lt; key_size) {</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;    <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;  }</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(priv_key, key_size, priv);</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(pub_key_x, key_size, pub_x);</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(pub_key_y, key_size, pub_y);</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;  ecc_ecdh(pub_x, pub_y, priv, result_x, result_y);</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;  <a class="code" href="crypto_8c.html#a8cefde2bc97452f889600c6b17ff04a6">dtls_ec_key_from_uint32</a>(result_x, key_size, result);</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;  <span class="keywordflow">return</span> key_size;</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;}</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"><a class="line" href="crypto_8h.html#a982fc9e78cd10d9323756b15b72c7970">  425</a></span>&#160;<a class="code" href="crypto_8c.html#a982fc9e78cd10d9323756b15b72c7970">dtls_ecdsa_generate_key</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *priv_key,</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;            <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_x,</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;            <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_y,</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;            <span class="keywordtype">size_t</span> key_size) {</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;  uint32_t priv[8];</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;  uint32_t pub_x[8];</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;  uint32_t pub_y[8];</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    <a class="code" href="group__prng.html#ga3f4036a1abfcec552ab583a2dc37be6c">dtls_prng</a>((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)priv, key_size);</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;  } <span class="keywordflow">while</span> (!ecc_is_valid_key(priv));</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;  ecc_gen_pub_key(priv, pub_x, pub_y);</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;  <a class="code" href="crypto_8c.html#a8cefde2bc97452f889600c6b17ff04a6">dtls_ec_key_from_uint32</a>(priv, key_size, priv_key);</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;  <a class="code" href="crypto_8c.html#a8cefde2bc97452f889600c6b17ff04a6">dtls_ec_key_from_uint32</a>(pub_x, key_size, pub_key_x);</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;  <a class="code" href="crypto_8c.html#a8cefde2bc97452f889600c6b17ff04a6">dtls_ec_key_from_uint32</a>(pub_y, key_size, pub_key_y);</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;}</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;<span class="comment">/* rfc4492#section-5.4 */</span></div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"><a class="line" href="crypto_8h.html#a49f03039780664684d110d83a228b163">  446</a></span>&#160;<a class="code" href="crypto_8c.html#a49f03039780664684d110d83a228b163">dtls_ecdsa_create_sig_hash</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *priv_key, <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;               <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *sign_hash, <span class="keywordtype">size_t</span> sign_hash_size,</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;               uint32_t point_r[9], uint32_t point_s[9]) {</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;  uint32_t priv[8];</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;  uint32_t hash[8];</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;  uint32_t rand[8];</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;  </div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(priv_key, key_size, priv);</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(sign_hash, sign_hash_size, hash);</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;    <a class="code" href="group__prng.html#ga3f4036a1abfcec552ab583a2dc37be6c">dtls_prng</a>((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)rand, key_size);</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;    ret = ecc_ecdsa_sign(priv, hash, rand, point_r, point_s);</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;  } <span class="keywordflow">while</span> (ret);</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;}</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00463"></a><span class="lineno"><a class="line" href="crypto_8h.html#afa2d9b2a195a1d8e8c56b1af8cb7bc82">  463</a></span>&#160;<a class="code" href="crypto_8c.html#afa2d9b2a195a1d8e8c56b1af8cb7bc82">dtls_ecdsa_create_sig</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *priv_key, <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *client_random, <span class="keywordtype">size_t</span> client_random_size,</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *server_random, <span class="keywordtype">size_t</span> server_random_size,</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *keyx_params, <span class="keywordtype">size_t</span> keyx_params_size,</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;              uint32_t point_r[9], uint32_t point_s[9]) {</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;  <a class="code" href="hmac_8h.html#abb19650a510c73117da0e9b88d68f159">dtls_hash_ctx</a> <a class="code" href="structdtls__cipher__context__t.html#a02da63201e2ac7bc508e3bb54c5761dc">data</a>;</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sha256hash[<a class="code" href="group__HMAC.html#ga060019cf2dab9903d58118fe1abe7018">DTLS_HMAC_DIGEST_SIZE</a>];</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;  <a class="code" href="hmac_8h.html#afe0af64930ac5d6a51289df6d1eb4f52">dtls_hash_init</a>(&amp;data);</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;  <a class="code" href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a>(&amp;data, client_random, client_random_size);</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;  <a class="code" href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a>(&amp;data, server_random, server_random_size);</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;  <a class="code" href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a>(&amp;data, keyx_params, keyx_params_size);</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;  <a class="code" href="hmac_8h.html#a96801bbb62f4c9c872b22cd8e438e51e">dtls_hash_finalize</a>(sha256hash, &amp;data);</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;  </div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;  <a class="code" href="crypto_8c.html#a49f03039780664684d110d83a228b163">dtls_ecdsa_create_sig_hash</a>(priv_key, key_size, sha256hash,</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;                 <span class="keyword">sizeof</span>(sha256hash), point_r, point_s);</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;}</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;<span class="comment">/* rfc4492#section-5.4 */</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;<span class="keywordtype">int</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"><a class="line" href="crypto_8h.html#a802b3a2b267747a76d4557c6c9a899d7">  483</a></span>&#160;<a class="code" href="crypto_8c.html#a802b3a2b267747a76d4557c6c9a899d7">dtls_ecdsa_verify_sig_hash</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_x,</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;               <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_y, <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;               <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *sign_hash, <span class="keywordtype">size_t</span> sign_hash_size,</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;               <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result_r, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result_s) {</div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;  uint32_t pub_x[8];</div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;  uint32_t pub_y[8];</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;  uint32_t hash[8];</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;  uint32_t point_r[8];</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;  uint32_t point_s[8];</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(pub_key_x, key_size, pub_x);</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(pub_key_y, key_size, pub_y);</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(result_r, key_size, point_r);</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(result_s, key_size, point_s);</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;  <a class="code" href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a>(sign_hash, sign_hash_size, hash);</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;</div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;  <span class="keywordflow">return</span> ecc_ecdsa_validate(pub_x, pub_y, hash, point_r, point_s);</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;}</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="keywordtype">int</span></div>
<div class="line"><a name="l00503"></a><span class="lineno"><a class="line" href="crypto_8h.html#a035860da45ba2586a95c8ef7f539a3c9">  503</a></span>&#160;<a class="code" href="crypto_8c.html#a035860da45ba2586a95c8ef7f539a3c9">dtls_ecdsa_verify_sig</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_x,</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pub_key_y, <span class="keywordtype">size_t</span> key_size,</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *client_random, <span class="keywordtype">size_t</span> client_random_size,</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *server_random, <span class="keywordtype">size_t</span> server_random_size,</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *keyx_params, <span class="keywordtype">size_t</span> keyx_params_size,</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;              <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result_r, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result_s) {</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;  <a class="code" href="hmac_8h.html#abb19650a510c73117da0e9b88d68f159">dtls_hash_ctx</a> <a class="code" href="structdtls__cipher__context__t.html#a02da63201e2ac7bc508e3bb54c5761dc">data</a>;</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sha256hash[<a class="code" href="group__HMAC.html#ga060019cf2dab9903d58118fe1abe7018">DTLS_HMAC_DIGEST_SIZE</a>];</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;  </div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;  <a class="code" href="hmac_8h.html#afe0af64930ac5d6a51289df6d1eb4f52">dtls_hash_init</a>(&amp;data);</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;  <a class="code" href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a>(&amp;data, client_random, client_random_size);</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;  <a class="code" href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a>(&amp;data, server_random, server_random_size);</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;  <a class="code" href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a>(&amp;data, keyx_params, keyx_params_size);</div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;  <a class="code" href="hmac_8h.html#a96801bbb62f4c9c872b22cd8e438e51e">dtls_hash_finalize</a>(sha256hash, &amp;data);</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="crypto_8c.html#a802b3a2b267747a76d4557c6c9a899d7">dtls_ecdsa_verify_sig_hash</a>(pub_key_x, pub_key_y, key_size, sha256hash,</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;                    <span class="keyword">sizeof</span>(sha256hash), result_r, result_s);</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;}</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* DTLS_ECC */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;<span class="keywordtype">int</span> </div>
<div class="line"><a name="l00524"></a><span class="lineno"><a class="line" href="crypto_8h.html#a288c4ec1a5110ab3f44ab3cb7c289e69">  524</a></span>&#160;<a class="code" href="crypto_8c.html#ad58098f0e821f81b4f1a6672ead17ac5">dtls_encrypt</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *src, <span class="keywordtype">size_t</span> length,</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf,</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *nounce,</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *key, <span class="keywordtype">size_t</span> keylen,</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;         <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *aad, <span class="keywordtype">size_t</span> la)</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;{</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;  <span class="keyword">struct </span><a class="code" href="structdtls__cipher__context__t.html">dtls_cipher_context_t</a> *ctx = <a class="code" href="crypto_8c.html#a5e6fa88c169e5d7289052600fc445c29">dtls_cipher_context_get</a>();</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;  ret = rijndael_set_key_enc_only(&amp;ctx-&gt;<a class="code" href="structdtls__cipher__context__t.html#a02da63201e2ac7bc508e3bb54c5761dc">data</a>.<a class="code" href="structaes128__ccm__t.html#a5bdf410f025e4177ced456059bc8a371">ctx</a>, key, 8 * keylen);</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;  <span class="keywordflow">if</span> (ret &lt; 0) {</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;    <span class="comment">/* cleanup everything in case the key has the wrong size */</span></div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;    <a class="code" href="debug_8h.html#ae1c22127c92fab70da7bf9cae8536e5c">dtls_warn</a>(<span class="stringliteral">&quot;cannot set rijndael key\n&quot;</span>);</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;    <span class="keywordflow">goto</span> error;</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;  }</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;  <span class="keywordflow">if</span> (src != buf)</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;    memmove(buf, src, length);</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;  ret = <a class="code" href="crypto_8c.html#a8b75c06a8e364132816aaddb81db0f2c">dtls_ccm_encrypt</a>(&amp;ctx-&gt;<a class="code" href="structdtls__cipher__context__t.html#a02da63201e2ac7bc508e3bb54c5761dc">data</a>, src, length, buf, nounce, aad, la);</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;error:</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;  <a class="code" href="crypto_8c.html#af65bc79ab89b4e162a0d30938d13109e">dtls_cipher_context_release</a>();</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;}</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;</div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;<span class="keywordtype">int</span> </div>
<div class="line"><a name="l00550"></a><span class="lineno"><a class="line" href="crypto_8h.html#a3a99a8753c2eb9baf1e03fe0ffbb813b">  550</a></span>&#160;<a class="code" href="crypto_8c.html#aac32554190e3970917a31ff01eed4080">dtls_decrypt</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *src, <span class="keywordtype">size_t</span> length,</div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf,</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *nounce,</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;         <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *key, <span class="keywordtype">size_t</span> keylen,</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;         <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *aad, <span class="keywordtype">size_t</span> la)</div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;{</div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;  <span class="keyword">struct </span><a class="code" href="structdtls__cipher__context__t.html">dtls_cipher_context_t</a> *ctx = <a class="code" href="crypto_8c.html#a5e6fa88c169e5d7289052600fc445c29">dtls_cipher_context_get</a>();</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;</div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;  ret = rijndael_set_key_enc_only(&amp;ctx-&gt;<a class="code" href="structdtls__cipher__context__t.html#a02da63201e2ac7bc508e3bb54c5761dc">data</a>.<a class="code" href="structaes128__ccm__t.html#a5bdf410f025e4177ced456059bc8a371">ctx</a>, key, 8 * keylen);</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;  <span class="keywordflow">if</span> (ret &lt; 0) {</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;    <span class="comment">/* cleanup everything in case the key has the wrong size */</span></div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;    <a class="code" href="debug_8h.html#ae1c22127c92fab70da7bf9cae8536e5c">dtls_warn</a>(<span class="stringliteral">&quot;cannot set rijndael key\n&quot;</span>);</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;    <span class="keywordflow">goto</span> error;</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;  }</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;  <span class="keywordflow">if</span> (src != buf)</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;    memmove(buf, src, length);</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;  ret = <a class="code" href="crypto_8c.html#a64f692530b9bb934f8852ca27c9ca2a1">dtls_ccm_decrypt</a>(&amp;ctx-&gt;<a class="code" href="structdtls__cipher__context__t.html#a02da63201e2ac7bc508e3bb54c5761dc">data</a>, src, length, buf, nounce, aad, la);</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;error:</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;  <a class="code" href="crypto_8c.html#af65bc79ab89b4e162a0d30938d13109e">dtls_cipher_context_release</a>();</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;}</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;</div>
<div class="ttc" id="crypto_8c_html_af65bc79ab89b4e162a0d30938d13109e"><div class="ttname"><a href="crypto_8c.html#af65bc79ab89b4e162a0d30938d13109e">dtls_cipher_context_release</a></div><div class="ttdeci">static void dtls_cipher_context_release(void)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00068">crypto.c:68</a></div></div>
<div class="ttc" id="crypto_8c_html_aa1b91000e339073fd2a9344957c22cbe"><div class="ttname"><a href="crypto_8c.html#aa1b91000e339073fd2a9344957c22cbe">dtls_handshake_malloc</a></div><div class="ttdeci">static dtls_handshake_parameters_t * dtls_handshake_malloc()</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00080">crypto.c:80</a></div></div>
<div class="ttc" id="global_8h_html_a1ff555e0b1443c4cb4d17ac2161d89b2ac5b79ee16e8c0e46873fa63fdb1ab9ca"><div class="ttname"><a href="global_8h.html#a1ff555e0b1443c4cb4d17ac2161d89b2ac5b79ee16e8c0e46873fa63fdb1ab9ca">TLS_COMPRESSION_NULL</a></div><div class="ttdef"><b>Definition:</b> <a href="global_8h_source.html#l00082">global.h:82</a></div></div>
<div class="ttc" id="crypto_8c_html_aa17bcdc666796e52788f82ee003bb172"><div class="ttname"><a href="crypto_8c.html#aa17bcdc666796e52788f82ee003bb172">dtls_handshake_free</a></div><div class="ttdeci">void dtls_handshake_free(dtls_handshake_parameters_t *handshake)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00146">crypto.c:146</a></div></div>
<div class="ttc" id="numeric_8h_html_a91f840f763f90c6d88a267011edf86d0"><div class="ttname"><a href="numeric_8h.html#a91f840f763f90c6d88a267011edf86d0">dtls_uint32_to_int</a></div><div class="ttdeci">static uint32_t dtls_uint32_to_int(const unsigned char *field)</div><div class="ttdef"><b>Definition:</b> <a href="numeric_8h_source.html#l00112">numeric.h:112</a></div></div>
<div class="ttc" id="structaes128__ccm__t_html"><div class="ttname"><a href="structaes128__ccm__t.html">aes128_ccm_t</a></div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00070">crypto.h:70</a></div></div>
<div class="ttc" id="numeric_8h_html_a24e753bacac6be5f30e18f8a2bdefda4"><div class="ttname"><a href="numeric_8h.html#a24e753bacac6be5f30e18f8a2bdefda4">max</a></div><div class="ttdeci">#define max(A, B)</div><div class="ttdef"><b>Definition:</b> <a href="numeric_8h_source.html#l00036">numeric.h:36</a></div></div>
<div class="ttc" id="structdtls__handshake__parameters__t_html_a56e7392a649731166fc82a523b0eb027"><div class="ttname"><a href="structdtls__handshake__parameters__t.html#a56e7392a649731166fc82a523b0eb027">dtls_handshake_parameters_t::hs_state</a></div><div class="ttdeci">dtls_hs_state_t hs_state</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00125">crypto.h:125</a></div></div>
<div class="ttc" id="tinydtls_8h_html"><div class="ttname"><a href="tinydtls_8h.html">tinydtls.h</a></div><div class="ttdoc">public tinydtls API </div></div>
<div class="ttc" id="crypto_8c_html_ad4a90eac1ed6a277c837d7f9dc0a923c"><div class="ttname"><a href="crypto_8c.html#ad4a90eac1ed6a277c837d7f9dc0a923c">cipher_context_mutex</a></div><div class="ttdeci">static pthread_mutex_t cipher_context_mutex</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00057">crypto.c:57</a></div></div>
<div class="ttc" id="group__HMAC_html_ga1ef9c88a0a2053b442413a9cea3deb73"><div class="ttname"><a href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a></div><div class="ttdeci">void dtls_hmac_update(dtls_hmac_context_t *ctx, const unsigned char *input, size_t ilen)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8c_source.html#l00076">hmac.c:76</a></div></div>
<div class="ttc" id="crypto_8c_html_a5f9937088ea2e1d19e7d472fecae9aaa"><div class="ttname"><a href="crypto_8c.html#a5f9937088ea2e1d19e7d472fecae9aaa">dtls_ecdh_pre_master_secret</a></div><div class="ttdeci">int dtls_ecdh_pre_master_secret(unsigned char *priv_key, unsigned char *pub_key_x, unsigned char *pub_key_y, size_t key_size, unsigned char *result, size_t result_len)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00398">crypto.c:398</a></div></div>
<div class="ttc" id="dtls__config_8h_html"><div class="ttname"><a href="dtls__config_8h.html">dtls_config.h</a></div></div>
<div class="ttc" id="crypto_8c_html_aa53dfed4868e257d2485024b5c170bae"><div class="ttname"><a href="crypto_8c.html#aa53dfed4868e257d2485024b5c170bae">dtls_psk_pre_master_secret</a></div><div class="ttdeci">int dtls_psk_pre_master_secret(unsigned char *key, size_t keylen, unsigned char *result, size_t result_len)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00318">crypto.c:318</a></div></div>
<div class="ttc" id="structaes128__ccm__t_html_a5bdf410f025e4177ced456059bc8a371"><div class="ttname"><a href="structaes128__ccm__t.html#a5bdf410f025e4177ced456059bc8a371">aes128_ccm_t::ctx</a></div><div class="ttdeci">rijndael_ctx ctx</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00071">crypto.h:71</a></div></div>
<div class="ttc" id="ccm_8c_html_aa3e92bdeca1d0730d48b8a85181d5b6d"><div class="ttname"><a href="ccm_8c.html#aa3e92bdeca1d0730d48b8a85181d5b6d">dtls_ccm_decrypt_message</a></div><div class="ttdeci">long int dtls_ccm_decrypt_message(rijndael_ctx *ctx, size_t M, size_t L, unsigned char nonce[DTLS_CCM_BLOCKSIZE], unsigned char *msg, size_t lm, const unsigned char *aad, size_t la)</div><div class="ttdef"><b>Definition:</b> <a href="ccm_8c_source.html#l00240">ccm.c:240</a></div></div>
<div class="ttc" id="crypto_8c_html_aea7bd0a10cf289c033216a97c0ee701e"><div class="ttname"><a href="crypto_8c.html#aea7bd0a10cf289c033216a97c0ee701e">dtls_p_hash</a></div><div class="ttdeci">size_t dtls_p_hash(dtls_hashfunc_t h, const unsigned char *key, size_t keylen, const unsigned char *label, size_t labellen, const unsigned char *random1, size_t random1len, const unsigned char *random2, size_t random2len, unsigned char *buf, size_t buflen)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00183">crypto.c:183</a></div></div>
<div class="ttc" id="hmac_8h_html_abb19650a510c73117da0e9b88d68f159"><div class="ttname"><a href="hmac_8h.html#abb19650a510c73117da0e9b88d68f159">dtls_hash_ctx</a></div><div class="ttdeci">SHA256_CTX dtls_hash_ctx</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00038">hmac.h:38</a></div></div>
<div class="ttc" id="crypto_8c_html_ad58098f0e821f81b4f1a6672ead17ac5"><div class="ttname"><a href="crypto_8c.html#ad58098f0e821f81b4f1a6672ead17ac5">dtls_encrypt</a></div><div class="ttdeci">int dtls_encrypt(const unsigned char *src, size_t length, unsigned char *buf, unsigned char *nounce, unsigned char *key, size_t keylen, const unsigned char *aad, size_t la)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00524">crypto.c:524</a></div></div>
<div class="ttc" id="debug_8h_html"><div class="ttname"><a href="debug_8h.html">debug.h</a></div></div>
<div class="ttc" id="crypto_8h_html"><div class="ttname"><a href="crypto_8h.html">crypto.h</a></div></div>
<div class="ttc" id="group__HMAC_html_ga5b1a3c1dcb5461bda44dd70f7bd33181"><div class="ttname"><a href="group__HMAC.html#ga5b1a3c1dcb5461bda44dd70f7bd33181">dtls_hmac_free</a></div><div class="ttdeci">void dtls_hmac_free(dtls_hmac_context_t *ctx)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8c_source.html#l00121">hmac.c:121</a></div></div>
<div class="ttc" id="crypto_8c_html_a49f03039780664684d110d83a228b163"><div class="ttname"><a href="crypto_8c.html#a49f03039780664684d110d83a228b163">dtls_ecdsa_create_sig_hash</a></div><div class="ttdeci">void dtls_ecdsa_create_sig_hash(const unsigned char *priv_key, size_t key_size, const unsigned char *sign_hash, size_t sign_hash_size, uint32_t point_r[9], uint32_t point_s[9])</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00446">crypto.c:446</a></div></div>
<div class="ttc" id="structdtls__cipher__context__t_html_a02da63201e2ac7bc508e3bb54c5761dc"><div class="ttname"><a href="structdtls__cipher__context__t.html#a02da63201e2ac7bc508e3bb54c5761dc">dtls_cipher_context_t::data</a></div><div class="ttdeci">aes128_ccm_t data</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00076">crypto.h:76</a></div></div>
<div class="ttc" id="crypto_8c_html_a86e6ce9d4b4afcef355836955697f52c"><div class="ttname"><a href="crypto_8c.html#a86e6ce9d4b4afcef355836955697f52c">crypto_init</a></div><div class="ttdeci">void crypto_init()</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00076">crypto.c:76</a></div></div>
<div class="ttc" id="global_8h_html"><div class="ttname"><a href="global_8h.html">global.h</a></div></div>
<div class="ttc" id="crypto_8c_html_a982fc9e78cd10d9323756b15b72c7970"><div class="ttname"><a href="crypto_8c.html#a982fc9e78cd10d9323756b15b72c7970">dtls_ecdsa_generate_key</a></div><div class="ttdeci">void dtls_ecdsa_generate_key(unsigned char *priv_key, unsigned char *pub_key_x, unsigned char *pub_key_y, size_t key_size)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00425">crypto.c:425</a></div></div>
<div class="ttc" id="crypto_8c_html_a5ae24f3621f545752732e318840d7e2b"><div class="ttname"><a href="crypto_8c.html#a5ae24f3621f545752732e318840d7e2b">dtls_ec_key_from_uint32_asn1</a></div><div class="ttdeci">int dtls_ec_key_from_uint32_asn1(const uint32_t *key, size_t key_size, unsigned char *buf)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00362">crypto.c:362</a></div></div>
<div class="ttc" id="global_8h_html_a0749f1df578b26eccab986b0d8abaa56"><div class="ttname"><a href="global_8h.html#a0749f1df578b26eccab986b0d8abaa56">uint48</a></div><div class="ttdeci">unsigned char uint48[6]</div><div class="ttdef"><b>Definition:</b> <a href="global_8h_source.html#l00051">global.h:51</a></div></div>
<div class="ttc" id="crypto_8c_html_a035860da45ba2586a95c8ef7f539a3c9"><div class="ttname"><a href="crypto_8c.html#a035860da45ba2586a95c8ef7f539a3c9">dtls_ecdsa_verify_sig</a></div><div class="ttdeci">int dtls_ecdsa_verify_sig(const unsigned char *pub_key_x, const unsigned char *pub_key_y, size_t key_size, const unsigned char *client_random, size_t client_random_size, const unsigned char *server_random, size_t server_random_size, const unsigned char *keyx_params, size_t keyx_params_size, unsigned char *result_r, unsigned char *result_s)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00503">crypto.c:503</a></div></div>
<div class="ttc" id="crypto_8c_html_a8cefde2bc97452f889600c6b17ff04a6"><div class="ttname"><a href="crypto_8c.html#a8cefde2bc97452f889600c6b17ff04a6">dtls_ec_key_from_uint32</a></div><div class="ttdeci">static void dtls_ec_key_from_uint32(const uint32_t *key, size_t key_size, unsigned char *result)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00352">crypto.c:352</a></div></div>
<div class="ttc" id="group__HMAC_html_ga060019cf2dab9903d58118fe1abe7018"><div class="ttname"><a href="group__HMAC.html#ga060019cf2dab9903d58118fe1abe7018">DTLS_HMAC_DIGEST_SIZE</a></div><div class="ttdeci">#define DTLS_HMAC_DIGEST_SIZE</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00074">hmac.h:74</a></div></div>
<div class="ttc" id="crypto_8c_html_a120f7f398e1a71a5f16e5447842bcfb3"><div class="ttname"><a href="crypto_8c.html#a120f7f398e1a71a5f16e5447842bcfb3">dtls_handshake_dealloc</a></div><div class="ttdeci">static void dtls_handshake_dealloc(dtls_handshake_parameters_t *handshake)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00084">crypto.c:84</a></div></div>
<div class="ttc" id="debug_8h_html_a0f158325426415d9efb5a36bebf45844"><div class="ttname"><a href="debug_8h.html#a0f158325426415d9efb5a36bebf45844">dtls_debug</a></div><div class="ttdeci">#define dtls_debug(...)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00139">debug.h:139</a></div></div>
<div class="ttc" id="structdtls__hs__state__t_html_a991b95919538531d730f74045e4fe3b1"><div class="ttname"><a href="structdtls__hs__state__t.html#a991b95919538531d730f74045e4fe3b1">dtls_hs_state_t::hs_hash</a></div><div class="ttdeci">dtls_hash_ctx hs_hash</div><div class="ttdef"><b>Definition:</b> <a href="state_8h_source.html#l00062">state.h:62</a></div></div>
<div class="ttc" id="ccm_8c_html_a40f4f23b5687e18dc1bce1c19101da42"><div class="ttname"><a href="ccm_8c.html#a40f4f23b5687e18dc1bce1c19101da42">dtls_ccm_encrypt_message</a></div><div class="ttdeci">long int dtls_ccm_encrypt_message(rijndael_ctx *ctx, size_t M, size_t L, unsigned char nonce[DTLS_CCM_BLOCKSIZE], unsigned char *msg, size_t lm, const unsigned char *aad, size_t la)</div><div class="ttdef"><b>Definition:</b> <a href="ccm_8c_source.html#l00176">ccm.c:176</a></div></div>
<div class="ttc" id="crypto_8c_html_a8b75c06a8e364132816aaddb81db0f2c"><div class="ttname"><a href="crypto_8c.html#a8b75c06a8e364132816aaddb81db0f2c">dtls_ccm_encrypt</a></div><div class="ttdeci">static size_t dtls_ccm_encrypt(aes128_ccm_t *ccm_ctx, const unsigned char *src, size_t srclen, unsigned char *buf, unsigned char *nounce, const unsigned char *aad, size_t la)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00283">crypto.c:283</a></div></div>
<div class="ttc" id="crypto_8c_html_a25930cdb27a6ffcf05e2c2a9c95a6af8"><div class="ttname"><a href="crypto_8c.html#a25930cdb27a6ffcf05e2c2a9c95a6af8">dtls_handshake_new</a></div><div class="ttdeci">dtls_handshake_parameters_t * dtls_handshake_new()</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00123">crypto.c:123</a></div></div>
<div class="ttc" id="group__HMAC_html_gaa1eb35fcb2c2eb69eebaefa8eb4a790d"><div class="ttname"><a href="group__HMAC.html#gaa1eb35fcb2c2eb69eebaefa8eb4a790d">dtls_hmac_init</a></div><div class="ttdeci">void dtls_hmac_init(dtls_hmac_context_t *ctx, const unsigned char *key, size_t klen)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8c_source.html#l00094">hmac.c:94</a></div></div>
<div class="ttc" id="structdtls__hmac__context__t_html"><div class="ttname"><a href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a></div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00095">hmac.h:95</a></div></div>
<div class="ttc" id="group__HMAC_html_gac3e9ef037800963783e618eafd046702"><div class="ttname"><a href="group__HMAC.html#gac3e9ef037800963783e618eafd046702">dtls_hmac_new</a></div><div class="ttdeci">dtls_hmac_context_t * dtls_hmac_new(const unsigned char *key, size_t klen)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8c_source.html#l00083">hmac.c:83</a></div></div>
<div class="ttc" id="hmac_8h_html_afe0af64930ac5d6a51289df6d1eb4f52"><div class="ttname"><a href="hmac_8h.html#afe0af64930ac5d6a51289df6d1eb4f52">dtls_hash_init</a></div><div class="ttdeci">static void dtls_hash_init(dtls_hash_t ctx)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00043">hmac.h:43</a></div></div>
<div class="ttc" id="group__HMAC_html_gga698cfa036e69361a93dcdd9b19579b23a3690b7a5bf11282bcdaa199c11408dd3"><div class="ttname"><a href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a3690b7a5bf11282bcdaa199c11408dd3">HASH_SHA256</a></div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00085">hmac.h:85</a></div></div>
<div class="ttc" id="debug_8h_html_ad4c9c94c054579b73789fead587c8514"><div class="ttname"><a href="debug_8h.html#ad4c9c94c054579b73789fead587c8514">dtls_crit</a></div><div class="ttdeci">#define dtls_crit(...)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00135">debug.h:135</a></div></div>
<div class="ttc" id="global_8h_html_adde6aaee8457bee49c2a92621fe22b79"><div class="ttname"><a href="global_8h.html#adde6aaee8457bee49c2a92621fe22b79">uint8</a></div><div class="ttdeci">unsigned char uint8</div><div class="ttdef"><b>Definition:</b> <a href="global_8h_source.html#l00047">global.h:47</a></div></div>
<div class="ttc" id="crypto_8c_html_a64f692530b9bb934f8852ca27c9ca2a1"><div class="ttname"><a href="crypto_8c.html#a64f692530b9bb934f8852ca27c9ca2a1">dtls_ccm_decrypt</a></div><div class="ttdeci">static size_t dtls_ccm_decrypt(aes128_ccm_t *ccm_ctx, const unsigned char *src, size_t srclen, unsigned char *buf, unsigned char *nounce, const unsigned char *aad, size_t la)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00300">crypto.c:300</a></div></div>
<div class="ttc" id="numeric_8h_html_a074d352855e1ffde4c2ddb6a6fea01b9"><div class="ttname"><a href="numeric_8h.html#a074d352855e1ffde4c2ddb6a6fea01b9">dtls_int_to_uint16</a></div><div class="ttdeci">static int dtls_int_to_uint16(unsigned char *field, uint16_t value)</div><div class="ttdef"><b>Definition:</b> <a href="numeric_8h_source.html#l00046">numeric.h:46</a></div></div>
<div class="ttc" id="hmac_8h_html_adb5ad07ab9a1adcdfdc20e13aa37bee6"><div class="ttname"><a href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a></div><div class="ttdeci">static void dtls_hash_update(dtls_hash_t ctx, const unsigned char *input, size_t len)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00048">hmac.h:48</a></div></div>
<div class="ttc" id="global_8h_html_ada7e71454d685b693df45b2c1ea0c59bacf33de998fd00f096eebbb0742d80abd"><div class="ttname"><a href="global_8h.html#ada7e71454d685b693df45b2c1ea0c59bacf33de998fd00f096eebbb0742d80abd">TLS_NULL_WITH_NULL_NULL</a></div><div class="ttdef"><b>Definition:</b> <a href="global_8h_source.html#l00075">global.h:75</a></div></div>
<div class="ttc" id="dtls_8h_html"><div class="ttname"><a href="dtls_8h.html">dtls.h</a></div><div class="ttdoc">High level DTLS API and visible structures. </div></div>
<div class="ttc" id="group__HMAC_html_gab98c992f3f9cc3c2d75077ddd46049bf"><div class="ttname"><a href="group__HMAC.html#gab98c992f3f9cc3c2d75077ddd46049bf">dtls_hmac_finalize</a></div><div class="ttdeci">int dtls_hmac_finalize(dtls_hmac_context_t *ctx, unsigned char *result)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8c_source.html#l00127">hmac.c:127</a></div></div>
<div class="ttc" id="crypto_8c_html_afa2d9b2a195a1d8e8c56b1af8cb7bc82"><div class="ttname"><a href="crypto_8c.html#afa2d9b2a195a1d8e8c56b1af8cb7bc82">dtls_ecdsa_create_sig</a></div><div class="ttdeci">void dtls_ecdsa_create_sig(const unsigned char *priv_key, size_t key_size, const unsigned char *client_random, size_t client_random_size, const unsigned char *server_random, size_t server_random_size, const unsigned char *keyx_params, size_t keyx_params_size, uint32_t point_r[9], uint32_t point_s[9])</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00463">crypto.c:463</a></div></div>
<div class="ttc" id="crypto_8c_html_aa58fc0b3953c6048834855a364432d8c"><div class="ttname"><a href="crypto_8c.html#aa58fc0b3953c6048834855a364432d8c">dtls_security_malloc</a></div><div class="ttdeci">static dtls_security_parameters_t * dtls_security_malloc()</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00088">crypto.c:88</a></div></div>
<div class="ttc" id="crypto_8c_html_a802b3a2b267747a76d4557c6c9a899d7"><div class="ttname"><a href="crypto_8c.html#a802b3a2b267747a76d4557c6c9a899d7">dtls_ecdsa_verify_sig_hash</a></div><div class="ttdeci">int dtls_ecdsa_verify_sig_hash(const unsigned char *pub_key_x, const unsigned char *pub_key_y, size_t key_size, const unsigned char *sign_hash, size_t sign_hash_size, unsigned char *result_r, unsigned char *result_s)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00483">crypto.c:483</a></div></div>
<div class="ttc" id="crypto_8c_html_a9fd792e4bb85e55082e4bf32de0d4bdb"><div class="ttname"><a href="crypto_8c.html#a9fd792e4bb85e55082e4bf32de0d4bdb">cipher_context</a></div><div class="ttdeci">static struct dtls_cipher_context_t cipher_context</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00055">crypto.c:55</a></div></div>
<div class="ttc" id="structdtls__security__parameters__t_html_a6a72df7ab1151f81e49d464175fcaf2a"><div class="ttname"><a href="structdtls__security__parameters__t.html#a6a72df7ab1151f81e49d464175fcaf2a">dtls_security_parameters_t::compression</a></div><div class="ttdeci">dtls_compression_t compression</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00100">crypto.h:100</a></div></div>
<div class="ttc" id="structdtls__security__parameters__t_html_a21d9fac709d739535b0cbecce4c18830"><div class="ttname"><a href="structdtls__security__parameters__t.html#a21d9fac709d739535b0cbecce4c18830">dtls_security_parameters_t::cipher</a></div><div class="ttdeci">dtls_cipher_t cipher</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00102">crypto.h:102</a></div></div>
<div class="ttc" id="crypto_8c_html_a444e2410b15ce27c6201204476d20497"><div class="ttname"><a href="crypto_8c.html#a444e2410b15ce27c6201204476d20497">dtls_security_dealloc</a></div><div class="ttdeci">static void dtls_security_dealloc(dtls_security_parameters_t *security)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00092">crypto.c:92</a></div></div>
<div class="ttc" id="crypto_8c_html_ad54069f2880b3c07185ebba736d02d17"><div class="ttname"><a href="crypto_8c.html#ad54069f2880b3c07185ebba736d02d17">dtls_security_free</a></div><div class="ttdeci">void dtls_security_free(dtls_security_parameters_t *security)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00174">crypto.c:174</a></div></div>
<div class="ttc" id="numeric_8h_html_a6914ee523b27539f4e441bede8c072b4"><div class="ttname"><a href="numeric_8h.html#a6914ee523b27539f4e441bede8c072b4">dtls_int_to_uint32</a></div><div class="ttdeci">static int dtls_int_to_uint32(unsigned char *field, uint32_t value)</div><div class="ttdef"><b>Definition:</b> <a href="numeric_8h_source.html#l00061">numeric.h:61</a></div></div>
<div class="ttc" id="netq_8h_html"><div class="ttname"><a href="netq_8h.html">netq.h</a></div></div>
<div class="ttc" id="crypto_8c_html_ab7ea6d487f3c6e67106df7f4d281804a"><div class="ttname"><a href="crypto_8c.html#ab7ea6d487f3c6e67106df7f4d281804a">HMAC_UPDATE_SEED</a></div><div class="ttdeci">#define HMAC_UPDATE_SEED(Context, Seed, Length)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00052">crypto.c:52</a></div></div>
<div class="ttc" id="group__HMAC_html_ga698cfa036e69361a93dcdd9b19579b23"><div class="ttname"><a href="group__HMAC.html#ga698cfa036e69361a93dcdd9b19579b23">dtls_hashfunc_t</a></div><div class="ttdeci">dtls_hashfunc_t</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00083">hmac.h:83</a></div></div>
<div class="ttc" id="debug_8h_html_ae1c22127c92fab70da7bf9cae8536e5c"><div class="ttname"><a href="debug_8h.html#ae1c22127c92fab70da7bf9cae8536e5c">dtls_warn</a></div><div class="ttdeci">#define dtls_warn(...)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00136">debug.h:136</a></div></div>
<div class="ttc" id="ccm_8h_html_a2d0e7515c26737872fe840958ed140ac"><div class="ttname"><a href="ccm_8h.html#a2d0e7515c26737872fe840958ed140ac">DTLS_CCM_NONCE_SIZE</a></div><div class="ttdeci">#define DTLS_CCM_NONCE_SIZE</div><div class="ttdef"><b>Definition:</b> <a href="ccm_8h_source.html#l00035">ccm.h:35</a></div></div>
<div class="ttc" id="crypto_8c_html_a1d568085636a04b4706b7e50df802a7b"><div class="ttname"><a href="crypto_8c.html#a1d568085636a04b4706b7e50df802a7b">dtls_security_new</a></div><div class="ttdeci">dtls_security_parameters_t * dtls_security_new()</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00155">crypto.c:155</a></div></div>
<div class="ttc" id="crypto_8c_html_a5e6fa88c169e5d7289052600fc445c29"><div class="ttname"><a href="crypto_8c.html#a5e6fa88c169e5d7289052600fc445c29">dtls_cipher_context_get</a></div><div class="ttdeci">static struct dtls_cipher_context_t * dtls_cipher_context_get(void)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00060">crypto.c:60</a></div></div>
<div class="ttc" id="group__prng_html_ga3f4036a1abfcec552ab583a2dc37be6c"><div class="ttname"><a href="group__prng.html#ga3f4036a1abfcec552ab583a2dc37be6c">dtls_prng</a></div><div class="ttdeci">static int dtls_prng(unsigned char *buf, size_t len)</div><div class="ttdef"><b>Definition:</b> <a href="prng_8h_source.html#l00033">prng.h:33</a></div></div>
<div class="ttc" id="hmac_8h_html_a96801bbb62f4c9c872b22cd8e438e51e"><div class="ttname"><a href="hmac_8h.html#a96801bbb62f4c9c872b22cd8e438e51e">dtls_hash_finalize</a></div><div class="ttdeci">static size_t dtls_hash_finalize(unsigned char *buf, dtls_hash_t ctx)</div><div class="ttdef"><b>Definition:</b> <a href="hmac_8h_source.html#l00053">hmac.h:53</a></div></div>
<div class="ttc" id="numeric_8h_html"><div class="ttname"><a href="numeric_8h.html">numeric.h</a></div></div>
<div class="ttc" id="structdtls__cipher__context__t_html"><div class="ttname"><a href="structdtls__cipher__context__t.html">dtls_cipher_context_t</a></div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00074">crypto.h:74</a></div></div>
<div class="ttc" id="prng_8h_html"><div class="ttname"><a href="prng_8h.html">prng.h</a></div><div class="ttdoc">Pseudo Random Numbers. </div></div>
<div class="ttc" id="structdtls__security__parameters__t_html"><div class="ttname"><a href="structdtls__security__parameters__t.html">dtls_security_parameters_t</a></div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00099">crypto.h:99</a></div></div>
<div class="ttc" id="structdtls__handshake__parameters__t_html"><div class="ttname"><a href="structdtls__handshake__parameters__t.html">dtls_handshake_parameters_t</a></div><div class="ttdef"><b>Definition:</b> <a href="crypto_8h_source.html#l00115">crypto.h:115</a></div></div>
<div class="ttc" id="group__netq_html_gac72fd2ec9f1e6908c8a10705fb6555e2"><div class="ttname"><a href="group__netq.html#gac72fd2ec9f1e6908c8a10705fb6555e2">netq_delete_all</a></div><div class="ttdeci">void netq_delete_all(list_t queue)</div><div class="ttdef"><b>Definition:</b> <a href="netq_8c_source.html#l00133">netq.c:133</a></div></div>
<div class="ttc" id="global_8h_html_a5e90b30856b81913af89565b55751da5"><div class="ttname"><a href="global_8h.html#a5e90b30856b81913af89565b55751da5">uint16</a></div><div class="ttdeci">unsigned char uint16[2]</div><div class="ttdef"><b>Definition:</b> <a href="global_8h_source.html#l00048">global.h:48</a></div></div>
<div class="ttc" id="crypto_8c_html_a5e47576e502b5a6255f1b489a4915512"><div class="ttname"><a href="crypto_8c.html#a5e47576e502b5a6255f1b489a4915512">dtls_prf</a></div><div class="ttdeci">size_t dtls_prf(const unsigned char *key, size_t keylen, const unsigned char *label, size_t labellen, const unsigned char *random1, size_t random1len, const unsigned char *random2, size_t random2len, unsigned char *buf, size_t buflen)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00249">crypto.c:249</a></div></div>
<div class="ttc" id="ccm_8h_html"><div class="ttname"><a href="ccm_8h.html">ccm.h</a></div></div>
<div class="ttc" id="crypto_8c_html_a1423f8111df1533241178461c10b50e3"><div class="ttname"><a href="crypto_8c.html#a1423f8111df1533241178461c10b50e3">dtls_mac</a></div><div class="ttdeci">void dtls_mac(dtls_hmac_context_t *hmac_ctx, const unsigned char *record, const unsigned char *packet, size_t length, unsigned char *buf)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00266">crypto.c:266</a></div></div>
<div class="ttc" id="crypto_8c_html_aac32554190e3970917a31ff01eed4080"><div class="ttname"><a href="crypto_8c.html#aac32554190e3970917a31ff01eed4080">dtls_decrypt</a></div><div class="ttdeci">int dtls_decrypt(const unsigned char *src, size_t length, unsigned char *buf, unsigned char *nounce, unsigned char *key, size_t keylen, const unsigned char *aad, size_t la)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00550">crypto.c:550</a></div></div>
<div class="ttc" id="crypto_8c_html_aaa510b41aa69dc5f93a1bf5bdde4a9c4"><div class="ttname"><a href="crypto_8c.html#aaa510b41aa69dc5f93a1bf5bdde4a9c4">dtls_ec_key_to_uint32</a></div><div class="ttdeci">static void dtls_ec_key_to_uint32(const unsigned char *key, size_t key_size, uint32_t *result)</div><div class="ttdef"><b>Definition:</b> <a href="crypto_8c_source.html#l00342">crypto.c:342</a></div></div>
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